Planning

__**Aim:**__ What factors affect the risk of cavities in our teeth?

__**Hypothesis:**__

I predict the coke will turn out to be the worst, and that it will shrink. I think this because coke has the most amount of sugar according to the nutritional information located on the coke bottle. Sugar is a huge cause for cavities and is very bad for teeth.

__**Application:**__

This will be useful in everyday life because then people will know what damage is being done to their teeth and how to prevent it.

__**Method:**__

Step 1: Soak teeth in a bowl or container of bleach for two minutes. Step 2: Clean the teeth using the gloves and toothbrush. Step 3: Put the all the containers and jars on the table (6 altogether) and number them from 1-6 labelling on each one which liquid will go inside it. Step 4: Place each tooth in a container/jar. Step 5: Pour in one liquid at a time using a measuring cup. Fill the measuring cup up to 100 milliliters for each liquid. Step 6: Seal the containers and jars and place them in a dry place. Step 7: Check on the teeth everyday and note down the changes. Measure the size of each tooth.


 * __Apparatus:__**


 * Old toothbrush
 * Bleach
 * Teeth(real teeth)
 * jars and containers(6 altogether)
 * coke
 * orange juice
 * coffee
 * measuring cup
 * ruler
 * Regular toothpaste
 * Gloves

__//Note://__ I could not get any teeth that were the same size, so I will keep them how they are and measure them now and find out which one shrunk the most.

__**Fair test:**__

This test will be a fair test because:


 * I will measure the teeth accurately
 * The liquids will be from the same bottle/jar
 * I will put the same amount of the liquid in the containers
 * The teeth will stay in the same place for the whole time of the testing.
 * The teeth will be brushed using the same toothbrush
 * The teeth will be observed everyday at the same time (7:40pm)

__**Variables:**__


 * Coke: || Coffee: || Orange juice: ||
 * Control || Control || Control ||
 * Colgate toothpaste || Colgate toothpaste || Colgate toothpaste ||